Improvement in sieves



UNITED STATES OLIVER BOND, OF MILWAUKEE, WISCONSIN.

IMPROVEMENT IN SIEVES.

Specification forming part of Letters Patent No. 166,680, dated August17, 1875; application filed February 8, 1875.

To all whom it may concern:

Be it known that I, OLIVER BOND, of Milwaukee, in the county ofMilwaukee, in the State of Wisconsin, have invented certain Improvementsin Druggists Sieves, of which the following is a specification:

The object of my invention is to sift poisons and other articles, and isa sieve closed so that the poison or other articles sifted shall not getout and poison the operator, and the revolving heaters are set in theshaft so as to operate in the form of a screw.

Figure 1 is an outside end view of the sieve; Fig. 2, a sectional sideview of same; and Fig, 3, a view of the cover, showing the rubberpacking. p

A is the outside box for holding the material after it is sifted; B, theshell of the sieve; O, the Wirenetting through which the material issifted; D, the cover of the sieve; E, the packing between the cover andthe shell of the sieve, which keeps the material from flying out duringthe sifting, and also packing between the outside box and the shell ofthe sieve for the same purpose; F, the heaters, placed in the shaft sothat they work like a screw; G, the

shaft in which the heaters are set; H, crank for operating the sieve; I,rubber around the end of the shaft G, acting as packing to keep thematerial from flying out while being sifted K, a piece of wood on theshell of the sieve, which fits down over the gudgeon of the shaft G ontothe rubber I. This sieve is placed in the box A, and the material to besifted is put into it, and the cover I) put on. This closes it up tight,and then the crank is revolved, and the heaters, coming in contact withthe wire of the sieve one after another, winding round in the form of ascrew, push the material through the meshes, it being closed up tight,so that nothing can escape.

I claim- The box A, provided with removable caps K and rubber cap I, incombination with the removable case B, provided with sieve O,

shaft G, rigid beaters F, and dust-tight cover D, constructed andarranged as shown and described.

OLIVER BOND. Witnesses:

J. B. SMITH, E. 1. SMITH.

